TWI230558B - Speaker structure for fixing a magnetic device on a diaphragm - Google Patents

Abstract

The present invention provides a speaker structure for fixing a magnetic device on a diaphragm. A diaphragm is fixedly formed along the side edge of a speaker frame body, so that a resonant chamber is formed between the diaphragm and the frame body. A magnetic device is fixedly formed in the center of the diaphragm along the direction of the resonant chamber. Therefore, when a coil set arranged at the inside central position of the frame body is excited, magnetic line of force is changed in the center of the resonant chamber, so that the magnetic device is shifted up and down in the space preserved at the center or periphery position of the coil set due to the attracting/repelling effect caused by the change of magnetic line of force, thereby making the diaphragm vibrate to generate sound. With such a structure design, it is able to greatly reduce the thickness of speaker, simplify the assembling structure and cost of speaker, effectively increase the amplitude stroke of the diaphragm, significantly enhance the bass characteristic and power of speaker, and reduce the weight.

Description

1230558 V. Description of the invention (1) [Technical field to which the invention belongs] The present invention is a La alpha eight structure, especially a P eight structure in which a magnetic element is fixed on a prostitute film. When the coil group is excited and changes the magnetic field lines, the magnetic element is caused to vibrate in the space reserved in the center or periphery of the coil, and drive the eardrum to emit sound. [Previous technology] According to the conventional horn 10 structure, see FIG. 1, it mainly includes an iron frame 11. The central position on one side of the iron frame 11 forms a recessed resonant cavity 12, and its periphery is pasted. Covered with a tympanic membrane 13, the tympanic membrane 13 is recessed in the direction of the resonant cavity 12, and its central position is fixed at one end of a movable sleeve 14, and a set of coils is wound around the outer edge of the other end of the movable sleeve 14. 15 and the movable sleeve 14 is located between the connecting end of the eardrum 13 and the coil 15, a wave-shaped damping film 16 is connected, and the damping film 16 extends in the radial direction and is connected to the iron frame 11 It is located at an appropriate position in the resonant cavity 12. An opening 17 is provided on the other side of the iron frame 11, and a fixing seat 18 is fixed on the periphery of the opening 17. The fixing seat 18 is provided with a through hole 19 at the end corresponding to the opening 17 and the opening The diameters of 17 and the through-hole 19 can just make one end of the coil 15 be wound around the movable sleeve 14 and penetrate into the fixed base 18, and the other end of the fixed base 18 is provided with another through-hole 20, which The perforation 20 can make the central post 211 of the iron core 21 with a T-shaped cross section penetrate and fix it, and can pass through the movable sleeve 14 and wind the inner diameter of one end of the coil 15, and the periphery of the fixed seat 18 is fixed. Provided with a permanent magnet 2 2. In such a traditional La Squad 10 structure, when a current flows through the coil 15, it will cause its magnetization to have an electromagnetic effect. The magnetic lines of force it generates will be

1230558 V. Description of the invention (2) The magnetic lines of force generated by the permanent magnet 22 fixed to its periphery form a suction and repulsion effect. Therefore, as the current and the direction of the coil 15 are changed, a coil is wound around the coil. The movable sleeve 14 of 15 will thus generate up and down vibrations, and in turn, the eardrum 13 will be linked to make the horn 10 sound. However, due to the weight and volume of parts such as the fixed base 18, iron core 21, and permanent magnet 22 of this conventional horn 10, the other side of the iron frame 11 corresponding to the eardrum 13 is fixedly installed. As a result, its thickness cannot be effectively reduced in design. In addition, because one end of the coil 15 is wound around the movable sleeve 丨 4 and penetrates into the fixed base 18, and is located in a limited gap between the central pillar 211 of the iron core 21 and the permanent magnet 22. Difficulty in assembling parts' Whether the size of the gap is properly controlled also directly affects the quality of the manufacturing process. In addition, the iron core 21 fixed at the bottom of the fixed seat 丨 8 also limits the vibration stroke of the movable sleeve 14. Therefore, when the speaker 10 is at a low-frequency output of high power, a coil 15 is wound around the movable sleeve 14. One end is easy to hit the iron core 21, which deforms the movable sleeve 14 and causes a permanent distortion of the output sound effect. These problems not only lead to the fact that the volume of traditional speakers cannot be reduced significantly, but also create design obstacles that are difficult to break through in the quality and quantity of their output sound effects. You Rong here, 'the inventor had designed a novel structure of Lapi 八 in all of his US patent No. 6,415, 〇37', and as shown in Figure 2, this U.S. invention patent is mainly based on a La σΛ⑽ On one side of the frame body 31, a tympanic membrane 32 is fixed along its periphery. A resonance cavity 33 is formed between the frame body 31 and the tympanic membrane 32. A coil 34 is fixed on the inner center of the frame body 31. The coil 34 is excited and will be placed in the center of the cavity "

η plane, page 6, 1230558 V. Description of the invention (3) The magnetic field lines are changed, and a magnetic element 35 is provided on the eardrum 32 corresponding to the central position of the coil 34. The repulsive effect vibrates up and down, which in turn causes the eardrum to vibrate and emit sound. According to the U.S. Patent No. 6, 41 5, 037, Lagu Ba 30, which is designed, because the magnetic element 35 is directly or indirectly fixed to the central position of the tympanic membrane 32, it can effectively reduce the figure 1 The space occupied by the traditional flavor I team 10, the upper fixing seat 18, the iron core 21, and the permanent magnet 22, has greatly reduced the thickness of the frame and reduced its weight. In addition, in the horn 30 designed by the US Patent No. 6,41 5, 0 37, the coil 34 is fixedly mounted on the frame body 31 of the horn 30 corresponding to the inner side of the eardrum 32. The central position, so when the coil 34 is excited, it can directly produce a repulsive effect on the magnetic element 35, which in turn drives the eardrum and emits sound, so it can effectively simplify the assembly structure and cost of the speaker and increase the amplitude of the eardrum Travel, avoid distortion, and greatly improve the bass characteristics and power of the speaker, effectively solving the obstacles that traditional speakers are difficult to break through in design. [Summary of the Invention] However, the US Patent No. 6, 415, 037 owned by the aforementioned inventor has a number of imperfections in design. The inventor has developed another method for fixing the magnetic element on the eardrum. Taste! < Structure. An object of the present invention is to attach a tympanic membrane along one side of a frame body of a α-α-eight, and a resonance cavity is formed between the tympanic membrane and the frame body. A resonance position is formed at a central position of the tympanic membrane along the resonance. Cavity direction and fixed

Page 7 1230558 V. Description of the invention (4) " Magnetic f-generating element, so, when a coil group set at the center position inside the frame body is excited and a magnetic field line changes in the center of the resonance cavity, the magnetic The repulsive effect of the component due to the changes in these magnetic field lines moves up and down in the space reserved in the center or peripheral position of the coil group, thereby causing the eardrum to vibrate and emit sound. In this way, traditional speakers can be effectively reduced The space occupied by parts such as the upper holder, iron core, and permanent magnets greatly reduces the thickness of the team. Another object of the present invention is to connect a wavy damping film at the outer edge of the movable sleeve adjacent to the eardrum. The damping film extends in the radial direction and is connected to the frame body in the resonance cavity. At a proper position, the frame body is located at the center of the bottom edge of the resonant cavity, and is provided with a through hole, and along the edge of the through hole is provided a wave-shaped auxiliary mud blocking film. The magnetic element faces the resonant cavity. One end is provided with a connecting rod, and the other end of the connecting rod can pass through another through hole reserved in the central position of the coil group, and is connected and fixed to the central position of the auxiliary damping film. Thus, when the coil group When it is excited, and the magnetic field line changes in the center of the resonant cavity, the magnetic element will be balanced by the damping film and the auxiliary damping film, and smoothly move up and down in the other through hole in the center of the coil group, so that the The tympanic membrane vibrates and emits sound. In this way, not only can the shift phenomenon of the movable sleeve be shaken up and down, but also it can effectively increase the amplitude and stability of the tympanic membrane. Constantly, to avoid distortion, to greatly improve the power, sound quality and volume of the speaker. Another object of the present invention is to add an iron core at the peripheral position of the coil group so as to be excited in the coil group, effectively increasing its 1230558 in the resonant cavity. V. Description of the invention (5) ------ -The magnetic line density generated by the center to greatly increase the power of the speaker. [Embodiment] In a preferred embodiment of the present invention, as shown in FIG. 3, the horn 40 mainly includes a frame body 41, and a recessed resonance cavity 43 is formed at a central position of one side of the frame body 41. A tympanic membrane 42 is attached and fixed on the periphery. The tympanic membrane 42 extends in the direction of the resonant cavity 43 and a magnetic element 45 is fixed at the central position. The frame body 41 is located at the center of the bottom of the resonant cavity 43 without a center. A post 411 is fixed on the central post 411. A coil group 44 is fixed on the central post 411. The magnetic element 45 is provided with a through hole 453 at the center of one end facing the resonant cavity 43. The diameter is slightly larger than the outer diameter of the coil group 44. One end of the magnetic element 45 can pass through the through hole 453 and can be movably sleeved on the coil group 44. In this embodiment, 'when the current flows through the coil group 44, it will cause it to be excited' and generate an electromagnetic effect in the center of the resonant cavity 43. The magnetic field lines generated by it will be the same as those generated by the magnetic element 45. The magnetic lines of force form a phase attraction and repulsion effect, so as the magnitude and direction of the current input to the coil group 44 changes, the magnetic element 45 will generate up and down vibrations, which in turn will drive the eardrum 42 and make La π 8 40 sound. In another preferred embodiment of the present invention, referring to FIG. 4, it is directed to the foregoing embodiment. In addition to fixing and fixing the coil group 44 on the central pillar 411 at the bottom of the resonant cavity 43, and At the bottom of the resonance cavity 43 adjacent to the coil group 44, another coil group 442 is added. The inner diameter of the other coil group 442 is larger than the outer diameter of the coil group 44, and a predetermined interval is maintained between each other.

Page 9 1230558 V. Description of the invention (6) The gap allows the magnetic element 45 to move in the gap when it is excited by the coil sets 44 and 442 to cause up and down vibration. In this way, the present invention can easily control the power and volume of the <4 0 by flexibly adjusting the number of coils and the excitation intensity of the coil groups 44 and 442. In the foregoing two preferred embodiments, the magnetic element 45 may be a highly magnetic permanent magnet. One end of the permanent magnet is directly fixed at the central position of the eardrum 42. The other end passes through the through hole provided in the center. 453, movably set on the coil group 44 or in a gap between the coil groups 44 and 44 2. In addition, in the two embodiments, referring to FIGS. 3 and 4 again, the magnetic element 45 may also be composed of a movable sleeve 452 and a highly magnetic permanent magnet 451. The movable sleeve 452 is a hollow sleeve body. One end is fixed at the central position of the eardrum 42 and the other end is connected to the permanent magnet 451. The through hole 453 provided in the center of the permanent magnet 451 can be movably set in the coil group 44. Or set in the gap between the coil groups 44 and 442. First, in the foregoing two preferred embodiments of the present invention, please refer to FIG. 3 and FIG. 4 to increase the damping effect of the eardrum 42 and the magnetic element 45 to correct the sound quality and volume. 45 or a position of the movable sleeve 452 adjacent to the eardrum 42 is connected with a wave-shaped damping film 46 which extends in the radial direction and is connected to the frame body 41 appropriately located in the resonance cavity 43 Location. In another preferred embodiment of the present invention, referring to FIG. 5 again, the la <60 mainly includes a frame body 61, and a recessed resonance cavity 63 is formed at a central position on one side of the frame body 61. The periphery is covered with a drum.

Page 10 1230558 V. Description of the invention (7) The membrane 62 extends in the direction of the resonant cavity 63, and a magnetic element 65 is fixed at the central position thereof. The frame body 61 is located at the center of the bottom of the resonant cavity 63 A central through hole 611 is provided at the position. The inner edge of the central through hole 611 faces one side of the resonant cavity 63. A coil group 64 is installed and fixed. The coil group 64 is centrally provided with another through hole 641. The diameter of a through hole 641 is slightly larger than the outer diameter of the magnetic element 65, and the other end of the magnetic element 65 can move up and down in the other through hole 641. In another preferred embodiment, when a current flows through the coil group 64, it will be excited, and an electromagnetic effect will be generated at the central position of the resonant cavity 63. The magnetic field lines generated by it will interact with the magnetic element 65. The generated magnetic lines of force form a phase attraction and repulsion effect, so as the magnitude and direction of the current input to the coil group 64 changes, the magnetic element 65 will generate up and down vibrations, and then drive the eardrum 62 to make the horn 60 emit sound. In another preferred embodiment of the present invention, referring to FIG. 6 again, for the aforementioned another preferred embodiment, the outer edge of the coil group 64 is provided at the bottom of the resonant cavity 63, An iron core 6 7 is added so that when the coil group 64 is excited to generate magnetic lines of force, the magnetic lines of force can converge to the position of the other through hole 641 provided in the center of the coil group 64 due to the setting of the core 67, effectively increasing The density of the magnetic field lines in the other through hole 641. In yet another preferred embodiment, the iron core 67 can also be disposed on the inner edge of the other through hole 641 provided in the center of the coil group 64. At this time, a through hole must be provided in the central position of the iron core 67, and the through hole The hole diameter needs to be slightly larger than the outer diameter of the magnetic element 65. The other end of the magnetic element 65 can move up and down in the through hole. In this way, the present invention can flexibly select different magnetic permeability coefficients.

1230558 V. Description of the invention (8) Iron core 6 7 to easily control the power and volume of the speaker 60. In the foregoing two preferred embodiments, the magnetic element 65 may be a highly magnetic permanent magnet. One end of the permanent magnet is directly fixed at the central position of the eardrum 62, and the other end thereof is movably disposed in the coil group 64. The other through hole 641 is provided in the center. In addition, in the two embodiments, referring to FIG. 5 and FIG. 6 again, the magnetic element 65 may also be composed of a movable sleeve 652 and a highly magnetic permanent magnet 651. The movable sleeve 652 is a hollow sleeve body. One end is fixed to the central position of the eardrum 62, and the other end is connected to the permanent magnet 651. The permanent magnet 651 can be movably disposed in the other through hole 641 provided in the center of the coil group 64. . In the aforementioned two preferred embodiments of the present invention, please refer to FIG. 5 and FIG. 6 again to increase the damping effect of the eardrum 62 and the magnetic element 65 to correct the sound quality and volume. (Or the movable sleeve 652) is adjacent to the eardrum 62, a wave-shaped damping film 66 is connected, and the damping film 66 extends in the radial direction and is connected to the frame body 61 in the resonance cavity 63. In place. In addition, the frame body 61 is located at the outer edge of the central through hole 611 provided at the bottom edge of the resonance cavity 63, and a wave-shaped auxiliary damping film 68 may be additionally provided, and the magnetic element 65 faces the bottom edge of the resonance cavity 63. On one end, a connecting rod 654 is added, and the other end of the connecting rod 654 can pass through the other through hole 641 provided in the center of the coil group 64 and be connected and fixed to the central position of the auxiliary damping film 68. In this way, when the coil group 64 is excited, and a magnetic field line changes in the center, the magnetic element 65 will be balanced by the damping film 66 and the auxiliary damping film 68, and smoothly in the other center of the coil group 64. A through-hole "I is displaced up and down, thereby

Page 12 1230558

The eardrum 62 generates vibration and emits sound, and the amplitude and stroke of the polarizing film that occurs when the movable sleeve vibrates up and down, avoiding rate, sound quality, and volume. In this way, not only can the phenomenon of live movement be completely avoided, but also the distortion of the drum can be effectively increased to greatly enhance the power of the horn. In the foregoing embodiment of the present invention, the permanent magnet can be fixed directly or indirectly to the center of the eardrum. Position, it can effectively reduce the space occupied by parts such as the anchor seat, iron core and permanent magnet on the traditional speaker, greatly reduce the thickness of La =, and reduce its weight. In addition, because the coil group is directly fixed at the central position of the frame body of the La β eight, when the coil group is excited, it can directly produce a repulsive effect on the magnetic element, and then drive the political film to make a sound Not only effectively simplifies the assembly structure and cost of the speaker, but also increases the amplitude stroke of the eardrum, avoids distortion, and greatly improves the bass characteristics and power of the speaker. The above description is only a preferred embodiment of the present invention, but the scope of the rights claimed by the users of the present invention is not limited to this. According to the technical content disclosed by the person skilled in the art, it can be easily All equivalent changes considered shall belong to the protection scope of the present invention.

Page 13 1230558 Brief description of the drawings [Simplified description of the drawings] Figure 1 is a schematic cross-sectional view of a traditional horn; Figure 2 is a drawing of US Patent No. 6, 41 5, 037 owned by the inventor 0-8 cross-sectional schematic diagram; FIG. 3 is a schematic cross-sectional diagram of a preferred embodiment of the horn of the present invention, and FIG. 4 is a cross-sectional schematic diagram of another preferred embodiment of the horn of the present invention;

Fig. 5 is a schematic sectional view of another preferred embodiment of the horn of the present invention, and Fig. 6 is a schematic sectional view of still another preferred embodiment of the horn of the present invention. [Description of the main component symbols] Team formation ......... ••… 40, 60 eardrums ......... ••… 42, 62 coils ........ .. ··· 44, 64 movable sleeves ............ "452, 652 damping membrane ......... • 46, 66 medium eight, ......... ........... a 7 D 1 Center post ................... 411 Central through hole ........ 611 Connecting rod .. ................... 654 Frame body ............ 41, 61 Resonant cavity ............... 43, 63 Magnetic element ... ... 45, 65 permanent magnets ... ••• 451, 651 Another coil group ... ... 442 Auxiliary damping film ............... 68 through-hole ............... 453 another through-hole ......... 641

Page 14

Claims (1)

1230558 VI. Scope of patent application 1. A horn structure with magnetic components fixed on a tympanic membrane, including: a frame body, a recessed resonant cavity is formed at a central position on one side of the frame body, and a tympanic membrane is fixed on the periphery of the frame body. The tympanic membrane extends in the direction of the resonant cavity; a central column is fixedly located at the center of the frame body at the bottom of the resonant cavity; a coil group 'the coil group is set and fixed to the central column A magnetic element 'one end of the magnetic element is fixed at the central position of the tympanic membrane, and a through hole is provided at the central position of one end of the magnetic element facing the resonance cavity', and the diameter of the through hole is slightly larger than that of the coil group The other end of the magnetic magnetic element is directly arranged through the coil group. 2. If the i-th element in the scope of the patent application can be a high magnetic permanent fixation in the central position of the tympanic membrane, the through hole is movably sleeved in the 3. 3. If the first element in the scope of the patent application includes: a movable sleeve The movable sleeve is the central position of the tympanic membrane; a permanent magnet, the permanent magnetic end, and the center of the permanent magnet is arranged on the coil group. The penetrating hole can be movably set on the team structure described in this item, and the other end of the magnet ', the permanent magnet, passes through the coil group. The structure of the squadron described in the above item, a hollow sleeve body, one end of which is fixed to the through-hole of the iron sleeve connected to the movable sleeve, and can be set on the other side. Page 15 1230558 VI. Patent application scope 4. As described in item 1 of the patent application scope, a squadron structure is provided on the magnetic element adjacent to the tympanic membrane, and a wave-shaped damping membrane is provided. It extends in the radial direction and is connected to the frame body at a proper position in the resonance cavity. 5. The flavor structure described in item 1, 2, 3, or 4 of the patent scope of the application, wherein at the bottom of the resonance cavity adjacent to the coil group, another coil group may be added, within the other coil group. The diameter is larger than the outer diameter of the coil group, and a predetermined gap is maintained between each other, so that the magnetic element can move in the gap when it is excited by the coil groups and generates vertical vibration. 6. A horn structure with magnetic components fixed on a tympanic membrane, comprising: a frame body, a recessed cavity formed at a central position on one side of the frame body, and a tympanic membrane is attached and fixed on the periphery, and the tympanic membrane faces the The cavity extends in the direction of the cavity. The frame body is provided with a central through hole at the center of the bottom of the cavity; a magnetic element, one end of which is fixed at the central position of the eardrum; a coil group, the coil group system It is fixed on the inner edge of the central through hole facing one side of the resonant cavity, and another through hole is provided at the center of the coil group. The diameter of the other through hole is slightly larger than the outer diameter of the magnetic element. The other end can move up and down in the other through hole. 7. The remaining structure described in item 6 of the scope of the patent application, wherein the magnetic element may be a highly magnetic permanent magnet. One end of the permanent magnet is directly fixed at the central position of the eardrum, and the other end is movable. Set in Page 16 1230558 VI. Scope of patent application The other through hole provided in the center of the coil group. 8. The horn structure according to item 6 of the scope of patent application, wherein the magnetic element includes: a movable sleeve, the movable sleeve is a hollow sleeve body, one end of which is fixed at the central position of the tympanic membrane; a permanent magnet, the permanent The magnet is connected to the other end of the movable sleeve. The permanent magnet can be movably disposed in the other through hole provided in the center of the coil group. 9. The horn structure according to item 6 of the scope of the patent application, wherein the magnetic element is provided adjacent to the tympanic membrane with a wave-shaped damping membrane which extends in the radial direction and is connected to the frame body It is located at a proper position in the resonance cavity. 10. The horn structure according to item 9 of the scope of patent application, wherein the frame body is located at the outer edge of the central through hole provided at the bottom edge of the resonance cavity, and a wave-shaped auxiliary damping film is provided, and the On one end of the magnetic element facing the bottom edge of the resonant cavity, a link is added, and the other end of the link can pass through the other through hole provided in the center of the coil, and be connected and fixed to the central position of the auxiliary damping film. 11. The horn structure according to item 6, 7, 8, 9 or 10 of the scope of the patent application, wherein an outer core of the coil group provided at the bottom of the resonance cavity may be provided with an iron core. 1 2. The horn structure according to item 6, 7, 8, 9 or 10 in the scope of the patent application, wherein an inner core of the other through hole provided in the center of the coil group may be provided with an iron core, and the central position of the iron core may be opened. There is a through hole, the through hole Page 17 1230558 VI. Scope of patent application The aperture must be slightly larger than the outer diameter of the magnetic element. The other end of the magnetic element can just move up and down in the through hole. Page 18